---
name: "wireshark-pcap-traffic-analyzer"
description: "Analyze network protocols, decrypt TLS streams, and detect anomalies with Wireshark/tshark."
metadata:
  author: "Wireshark Foundation"
  version: "1.0.0"
  runtime_compatibility:
    - "codex"
    - "claude-code"
    - "cursor"
    - "windsurf"
triggers:
  - "analyze pcap with tshark"
  - "decrypt tls in wireshark"
  - "filter dns traffic tshark"
permissions:
  fs_read: true
  fs_write: "workspace"
  shell_exec: false
  net_access: false
---

# Wireshark & tshark Packet Capture Traffic Analysis

Inspects packet captures (.pcap) using Wireshark and tshark CLI: display filters, TCP stream reassembly, TLS session key decryption with SSLKEYLOGFILE, and HTTP/DNS traffic auditing.

## When to Invoke
Invoke this skill whenever you need to:
- analyze pcap with tshark
- decrypt tls in wireshark
- filter dns traffic tshark

## Execution SOP & Rules
1. Filter captures using tshark display filters: tshark -r capture.pcap -Y 'http.request or dns'.
2. Extract specific fields with -T fields -e ip.src -e ip.dst -e http.request.uri.
3. Decrypt TLS traffic by setting Pre-Master-Secret log filename in Wireshark preferences.
4. Identify anomalous connection spikes and abnormal retransmission rates.

## Verification Checklist
- Run local linting, syntax validation, and type-checks before reporting completion.
- Ensure all created or modified files adhere to workspace boundaries and avoid uncommitted secrets.
- Verify tests or build commands exit cleanly with return code 0.